Virtuous English AcademyConjunctions in English: And, But, Or, Because (A1)
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Conjunctions are what turn a list of correct short sentences into English that sounds like a person speaking. This lesson covers and, but, or, because and so, and the comma rules that go with them.
Beginner English is rarely wrong. It is chopped up. I have a brother. He is a doctor. He lives in Berlin. I don't see him often. Every sentence there is correct, and the paragraph still reads like a list because nothing connects to anything. Conjunctions are what turn that list into English somebody would actually say, and they are the cheapest upgrade available to a learner: five short words, learned in an afternoon, and your writing immediately sounds a level higher.
The five that matter at A1 do four different jobs. And adds; but contrasts; or offers a choice; because gives a reason; so gives a result. Because and so are worth noticing as a pair, because they express the same relationship pointed in opposite directions — it was raining, so we stayed in and we stayed in because it was raining describe one event with the cause on different sides of the sentence.
There are two traps. The first is because of, which looks like a longer version of because and is not: because takes a whole clause with a verb, because of takes a noun. The second is that negatives flip the choice between and and or — he doesn't eat meat or fish, never and fish, because the negative has to reach both items.
How to form Conjunctions
| Word | Job | Example |
|---|---|---|
| and | adds a similar idea | She's a nurse and her husband is a teacher. |
| but | adds a contrasting idea | The flat is small but very bright. |
| or | offers a choice or alternative | Would you like tea or coffee? |
| because | gives the reason | I'm tired because I worked late. |
| so | gives the result | I worked late, so I'm tired. |
| or (in negatives) | covers both items after not | He doesn't drink tea or coffee. |
Conjunctions: the key rules
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And adds; but contrasts; or offers a choice.
I have a brother and a sister. It's small but comfortable. Tea or coffee?
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Because gives a reason and answers the question why.
I'm tired because I worked late.
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So gives a result, which is the opposite direction to because.
It was raining, so we stayed at home.
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Use or, not and, in a negative list.
He doesn't eat meat or fish.
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A comma normally comes before but and so, but not before and in a short list.
It was late, so we left. I bought bread and milk.
When to use Conjunctions
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Joining two facts
The most common use of and — two pieces of information of equal weight in one sentence.
I live in Prague and I work for a bank.
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Softening or balancing
But is what allows a sentence to say two things that pull in different directions.
The hotel was expensive but the location was perfect.
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Offering alternatives
Or presents a choice, in questions and in statements alike.
We can walk or take a taxi.
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Explaining yourself
Because answers why, and it is what turns a bare opinion into an argument.
I prefer the train because it's more comfortable.
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Stating consequences
So places the result second, which is often the more natural order in speech.
The shop was closed, so we went home.
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Making lists
In a list, and appears only before the final item — the others are separated by commas.
I bought bread, cheese, apples and milk.
because vs. because of
These two are not interchangeable, and the difference is purely about what comes next. Getting it wrong is one of the most visible A1 errors in written English.
because + clause
Followed by a subject and a verb — a complete idea. This is the form you will need in nine cases out of ten.
We stayed at home because it was raining.
because of + noun
Followed by a noun or noun phrase, with no verb at all.
We stayed at home because of the rain.
Conjunctions in example sentences
- I speak English and a little Spanish.And joining two objects rather than two clauses.
- The film was long but really interesting.But contrasting two adjectives.
- Do you want to eat now or later?Or offering a choice inside a question.
- She's learning Italian because she's moving to Rome.Because plus a full clause giving the reason.
- It was very cold, so I wore my winter coat.So giving the result — note the comma before it.
- He doesn't like football or tennis.After a negative, or is what covers both items.
- We were late because of the traffic.Because of plus a noun — no verb follows.
- I'd love to come, but I'm working on Saturday.But introducing a polite refusal — an everyday use.
Conjunctions in a real conversation
Almost every reply here is joined rather than chopped. That is the whole difference between A1 and A2 writing.
Fatima:Are you coming to the picnic on Sunday?
Jonas:I'd like to, but I'm working until three.
Fatima:Come afterwards. We'll be in the park or at Ana's if it rains.
Jonas:Perfect. Should I bring drinks or something to eat?
Fatima:Drinks, please, because we've already got too much food.
Jonas:Fine. My bus is slow, so I might be a bit late.
Common mistakes (and how to fix them)
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I'm tired, because of I worked late.
I'm tired because I worked late.
Because is followed by a clause; because of is followed by a noun.
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I like tea, but I like coffee.
I like tea and I like coffee.
But needs a genuine contrast — with two things you like, the connector is and.
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She doesn't drink tea and coffee.
She doesn't drink tea or coffee.
After a negative, or is what covers both items. And leaves the sentence ambiguous.
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Because it was raining. We stayed at home.
Because it was raining, we stayed at home.
A because clause is not a sentence on its own — it has to be attached to a main clause.
Practise Conjunctions today
Joining is a rewriting skill. Start from sentences that already exist rather than inventing new ones.
- Write six very short sentences about your week, then join them into three using and, but and because.
- Rewrite three because sentences with so, moving the reason to the front.
- Write four sentences with because and four with because of, using the same four reasons.
- Turn five positive sentences into negatives and change and to or where needed.
- Take a paragraph you wrote last week and join every pair of short sentences you can find.
Conjunctions: frequently asked questions
What is the difference between because and so?
They express the same cause-and-result relationship from opposite ends. Because introduces the reason: I stayed at home because I was ill. So introduces the result: I was ill, so I stayed at home. Both sentences describe identical events; the choice is about which half you want to state first. What you cannot do is use both in one sentence — because I was ill, so I stayed at home is a common error.
When do I use because of instead of because?
Use because of when a noun follows, and because when a whole clause with a verb follows. Because of the rain has a noun; because it was raining has a subject and a verb. If you can hear a verb coming next, you need plain because. The error becomes visible in writing, which is why it is worth checking deliberately rather than by ear.
Why is 'He doesn't eat meat and fish' wrong?
Because the negative needs to reach both items, and or is what carries it across. He doesn't eat meat or fish clearly excludes both. With and, the sentence technically says he does not eat them together, which leaves open the possibility that he eats each one separately. English resolves that ambiguity by requiring or after a negative.
Do I need a comma before and, but and so?
Before but and so, yes, when they join two complete clauses: It was late, so we left. Before and the comma is usually left out in short sentences — I bought bread and milk — and used when the two halves are long or when the list has three or more items. British style generally omits the comma before the final and in a list; American style often keeps it.
Can I start a sentence with And or But?
Yes. It is common in modern writing and in all speech, and it is used deliberately for emphasis after a full stop. The old school rule against it was never a rule of grammar. That said, at A1 the safer habit is to join inside the sentence, because a beginner's short sentences starting with And tend to read as a list rather than as a stylistic choice.